ill的过去式和过去分词
ill 只有名词、副词、形容词词性，非动词，所以无过去式和过去分词。
复数： ills
比较级： worse
最高级： worst
Laurence Waters visited us in place of John Trethewy who was unfortunately ill
You must slow down or you\'ll make yourself ill.
你得松松劲，不然会累病的。
He was very good to me when I was ill.
我生病时他对我关怀备至。
He\'s been ill a long time.
他生病很久了。
